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How to change the scan rate of the main driver worksheet?

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I have read the user manual but the desciption doesnt make sense to me. Where do I edit the file? I tried adding it to the configuration settings file but it didn't work. What am I missing?
(From Manual)To adjust the rate, manually edit the project file
(i.e., projectname.APP) to add the following entry:
[Options]
MainDrvAlwaysTrigger=tagname
tagname can be either another system tag.
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  • Thanks for the reply Greg.
    I was actually trying to slow down the scan rate. The project that I am working on has 20 PLCs and they are all communicating via cell modem or satellite. The scan rate seems too fast and is causing timeout errors. I am using standard driver sheets for the majority of the project and they are working fine but these are all existing PLCs that weren't created with SCADA in mind. So I am using the standard drivers for any tags that are reasonably grouped together and the main sheet for the remaining. The driver is MOTCP.
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  • Thanks for the reply Greg.
    I was actually trying to slow down the scan rate. The project that I am working on has 20 PLCs and they are all communicating via cell modem or satellite. The scan rate seems too fast and is causing timeout errors. I am using standard driver sheets for the majority of the project and they are working fine but these are all existing PLCs that weren't created with SCADA in mind. So I am using the standard drivers for any tags that are reasonably grouped together and the main sheet for the remaining. The driver is MOTCP.
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